摘要
报道了醉鱼草属(Buddleja)4个种的染色体核型。云南醉鱼草(B.yunnanensis)的核型公式为2n=2x=38=22m+16sm,皱叶醉鱼草(B.crispa)为2n=2x=38=26m+10sm+2st,密蒙花(B.officinalis)为2n=2x=38=20m+16sm+2st,日本醉鱼草(B.japonica)为2n=2x=38=20m+16sm+2st。日本醉鱼草的核型为2B型,其它3个种的核型为2A型。根据核型分析结果,结合形态学特征和已有的细胞学资料,初步讨论了醉鱼草组(Sect.Neemda)两个系(Series)可能的演化关系。
The chromosome numbers and karyotypes of the 4 species in genus Buddleja were reported. The karyotype formulas are 2n= 2x=38 = 22m ＋ 16sm （ B. yunnanensis）, 2n = 2x = 38 = 26m ＋ 10sm ＋ 2st （ B. crispa ）, 2n = 2x = 38 = 20m ＋ 16sm ＋ 2st （ B. officinalis ）, and 2n = 2x = 38 = 20m ＋ 16sm ＋ 2st （ B.japonica ）. Karyotype of B .japonica belongs to Stebbins＇ s 2B type and other 3 species belong to Stebbins＇s 2A type. Based on the cytological data （karyotypes and the recorded chromosome numbers） and the species morphologies, the evolution trend of the two series in Sect, Neemda was briefly discussed.
出处
《云南植物研究》
CSCD
北大核心
2006年第1期37-40,共4页
Acta Botanica Yunnanica
基金
中国科学院知识创新工程西南基地创新基金(KZ:I29)
关键词
醉鱼草属
核型
演化趋势
Buddleja
Karyotype
Evolution trend
